Is it worth playing from the beginning?

I want to play wotlk and I've heard Lordaeron is a good choice. But I'm also not sure because this server is already progressed and I'm afraid I won't be able to play older raids. Is it worth playing here? Can I find some people that still do that?

There are a number of progressive guilds on both horde and alliance. Some however are not actually progressive and just plan to raid old content while others will only allow certain ilvls as they clear through As for pugs, I don't think i've seen more than 1 naxx pug going since i've been playing. Most ppl seem to do the endgame content.